:_i ! co rM O < Z MEMO tZ-3-58W NASA _. !:7 _ ;,:, ,... MEMORANDUM HEAT TRANSFER IN THE TURBULENT INCOMPRESSIBLE BOUNDARY LAYER III -ARBITRARY WALL TEMPERATURE AND HEAT FLUX By W. G. Reynolds, W. M. Kays, and S. J. Kline Stanford University i3i!:!/i:} i_::!_!_} !i'!i:!i!!!!i3 NATIONAL SPACE AERONAUTICS ADMINISTRATION WASHINGTON December 1958 https://ntrs.nasa.gov/search.jsp?R=19990116044 2018-05-05T15:29:52+00:00Z
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
:_i!
co
rM
O
,- v
m
u"- q,/ /////z7'////
MEASURED TEMPERATURES
8
0 .8 1.6
DISTANCE FROM
\- -- RUBESIN PREDICTION -
..... i
2.4 3.2 4.0 4.8
LEADING EDGE, x, ft
Figure 9. - Example for constant temperature followed by adiabatic wall.
3O
0
TEMPERATURESPREDICTED USINGISOTHERMAL
EQUATION
RATURESPREDICTED BYPRESENT INTEGRALANALYSIS
0 MEASUREDTEMPERATURES
MEASURED HEAT FLUX
.8
0
1.6 2.4 3.2
DISTANCE FROM LEADING EDGE, x, ft
Figure i0. - Example for pulse heat input.
0
0")
28
I.=..
. 24 /\
w 20 .r
w
w 16
u.
E
re 0 MEASURED TEMPERATURESLU(3.=EWI--
12 i
4 q
0
0
51
45O
A
350 ..........-. PREDICTED HEAT FLUX
vMEASURED HEAT FLUX
500 .8 1.6 2.4 3.2 4.0 4.8
DISTANCE FROM LEADING EDGE, x , fl"
Figure ii. - Prescribed temperature treatment of irregular example.
52
400
N-
O-
i.
m
m
X
20014.
hi"r
100'
A
,A
Z_MEASURED HEAT FLUX /_
r r
APPROXIMATION BY __//
STEPS AND RAMPS
L=
'\ / \ N
32
li..o
4,--
ILl0ZWn,'hihU. 16
o
w
F-
Q.
I-
0
8
/
0 MEASURED TEMPERATURES /\
/ \/
/ ,q \
" ///\ \._"1 / O_
/ II PREDICTED --_ / rv/ ' O N
: / :_ TEMPERATURES/ -.
I i ,I "_I L !
| "--...._ .-._ I''--._TEMPERATURES PREDIGTED FROM- _ .-I --' ISOTHERMAL EQUATION --
.8 1.6 2.4 :5.2
DISTANCE FROM LEADING EDGE, X , ff
4.0 4.8
Figure 12. - Prescribed heat-flux treatment of irregular example.
NASA - Langley Field, Va.
Related Documents
